[SCTP]: Do not increase rwnd when reading partial notification.



When a user reads a partial notification message, do not
update rwnd since notifications must not be counted towards
receive window.

Tested-by: Oliver Roll <mail@oliroll.de>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>

parent 60c778b2

net/sctp/socket.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -1911,6 +1911,7 @@ SCTP_STATIC int sctp_recvmsg(struct kiocb iocb, struct sock sk,
		* rwnd by that amount. If all the data in the skb is read,
		* rwnd is updated when the event is freed.
		*/
		if (!sctp_ulpevent_is_notification(event))
		sctp_assoc_rwnd_increase(event->asoc, copied);
		goto out;
		} else if ((event->msg_flags & MSG_NOTIFICATION) \|\|